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2016-10-26 - Colloque/Article dans les actes sans comité de lecture - Anglais - 7 page(s)

Delaunois Fabienne , Tosar François , Groulard frédéric, "Study of the stainless steel corrosion in pharmaceutical facilities: development and incidence" in MS&T 2016, Salt Lake City, USA, 2016

  • Codes CREF : Chimie des surfaces et des interfaces (DI1327), Corrosion des matériaux (DI2114)
  • Unités de recherche UMONS : Métallurgie (F601)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
  • Centres UMONS : Ingénierie des matériaux (CRIM)

Abstract(s) :

(Anglais) Production and distribution equipment for clean utilities used in pharmaceutical industries are generally made of austenitic stainless steel. Vessels and pipes continuously undergo cyclic phases of production and sanitisation where the temperature can reach 95°C (hot purified water) or 121°C (pure steam). In these extreme conditions, the stainless steel surface slowly changes colour from metallic to red and, in the worst case, to black. This phenomenon is called Rouging. In the end, pharmaceutical facilities may become unsuitable to produce vaccines and drugs. The main goal of this paper is to describe the methodology used to understand and explain the development of this specific kind of corrosion: (i) Evolution of stainless steel surface; (ii) Evolution of water chemistry; (iii) Accelerated corrosion test.

Mots-clés :
  • (Anglais) Rouge
  • (Anglais) Austenitic stainless steel
  • (Anglais) clean utilities
  • (Anglais) corrosion
  • (Anglais) pharmaceutical clean utilities